has_key?/1 does not respect ttl

[nsweeting]

Environment

Elixir version (elixir -v): Elixir 1.7.3 (compiled with Erlang/OTP 21)
Nebulex version (mix deps): 1.0.0
Operating system: Ubuntu 18.04

Expected behavior

Using has_key?/1 on a key that was set with a ttl should return false when the ttl has expired.

Actual behavior

iex> Cache.set(:foo, 1, ttl: 0)
1
iex> Cache.get(:foo)
nil

iex> Cache.set(:foo, 1, ttl: 0)
1
iex> Cache.has_key?(:foo)
true

[cabol]

@nsweeting good catch! It is fixed now (master branch). Please check it out again and feel free to re-open it if the problem persist.